Deville won't start

Left light on in car did boost and car started. Next day no start. Tested batt. had a
bad cell in the old battery so bought a new one. Now still the car won't turn but dash
and lights are fine and bright nothing else

Re: Deville won't start

The new battery is no longer fully charged after only 1 night.
Have to recharge battery then will check maxi fuses I believe under the hood by reservoir tank. How can I tell if the relays are bad? The fuse will be broken but the relays?

Re: Deville won't start

Still need help new battery but car will not crank or start. The strange thing is that the battery seems to drain quickly. I gave car a boost when I put key in ignition during boost the lights inside were bright. Then when I turn they turned dim. After that the power seems to be drained. Any ideas?

Re: Deville won't start

I think you need to put a 12v test lamp in line between the negative cable and the battery terminal. If you have a voltage draw it should illuminate. Start pulling fuses until it goes out.Then you'll know what circuit or component to concentrate on.

Re: Deville won't start

Ok I ddi the test and found out that the truk pull down swith was the problem It was pulling 11 volts accoding to meter. I pulled fues and no prolem starting dorve car today. Can I replace trunk with regular trunk lock instead of the automatice one?Thanks again for all of your help really appreciate it!